Commercial condominium · Union Square, Manhattan
Stuyvesant Building
100 Fifth Avenue, New York, NY 10011
The Stuyvesant Building (100 Fifth Avenue) is a 19-floor commercial condominium in Union Square, Manhattan, built in 1907, with about 224,000 square feet of office space according to city records.
Also at 98-104 Fifth Avenue and 1-3 West 15th Street.
- Office space
- 224K SF
- Floors
- 19
- Year built
- 1907
- Zoning
- C6-4M
The 7th largest of the 53 office buildings we track in Union Square. Compare it with 6 neighbors
No space at 100 Fifth Avenue is listed on Leasemark yet. Own or broker space here? List it free and it is matched against every active requirement the day it goes up, or import a spreadsheet of up to 50 spaces at once. Nothing free right now? Get tenant alerts for Union Square and hear the moment a tenant posts a requirement there. Manage or lease this building? Claim this page.
Print a one-page profile of this building for a tour book or a client proposal.
Compared with its neighbors
How the Stuyvesant Building compares
Next to the 6 nearest large office buildings, all within a 1 minute walk, the Stuyvesant Building ranks 3rd of 7 by office floor area. It went up in 1907; the median neighbor dates from 1904. Its estimated property tax, about $23.19 a square foot of floor area before abatements, is below the neighbors' median of $26.95.
| Building | Office space | Floors | Built | Tax / SF |
|---|---|---|---|---|
| Stuyvesant Building, 100 Fifth Avenue | 224K SF | 19 | 1907 | $23.19 |
| Judge Building, 110 Fifth Avenue | 135K SF | 11 | 1890 | $29.39 |
| Knickerbocker Building, 79 Fifth Avenue | 256K SF | 16 | 1906 | $26.27 |
| 84 Fifth Avenue | 118K SF | 11 | 1903 | $27.62 |
| Van Beuren Building, 71 Fifth Avenue | 122K SF | 11 | 1907 | $17.47 |
| Annin Building, 85 Fifth Avenue | 95K SF | 13 | 1901 | $14.04 |
| Merchants' Exchange Building, 114 Fifth Avenue | 329K SF | 18 | 1909 | $28.32 |
Sources: NYC Department of City Planning, PLUTO 26v2 for size, floors and year built; NYC Department of Finance 2026/27 roll for tax (taxable value times the class rate, before abatements, over the whole floor area). Large means at least 35,000 SF of the building's main use. Walking times are straight-line estimates.
NYC tax lot records
Building facts
- Building name
- Stuyvesant Building
- Other addresses
- 98-104 Fifth Avenue; 1-3 West 15th Street
- ZIP code
- 10011
- Building type
- Commercial condominium (city class RC)
- Total floor area
- 250,671 SF
- Commercial floor area
- 250,671 SF
- Office
- 224,260 SF
- Retail
- 16,926 SF
- Height
- 19 floors
- Average floor
- About 13,200 SF (floor area divided by floors)
- Year built (tax records)
- 1906
- Last major alteration
- 1979
- Lot area
- 16,085 SF
- Zoning district
- C6-4M
- Built FAR
- 15.58
- Max commercial FAR
- 10
- Historic district
- Ladies' Mile Historic District
- Tax lot (BBL)
- 1008177502
Nearest subway
- 14 St-Union Sq
- 14 St
- 23 St
Source: NYC Department of City Planning, PLUTO 26v2, pulled 2026-10-16; addresses from the Property Address Directory (PAD) 26b; building name from the NYC Landmarks Preservation Commission (below); subway stations from the MTA Subway Stations dataset, pulled 2026-10-16. Floor areas are the city's estimates for the whole building, not available space. Walking times are straight-line estimates. How we build these pages. Something wrong on this page? Tell us.
NYC storefront registry (Local Law 157)
Storefronts and vacancy
Owners registered 4 storefronts at the Stuyvesant Building for December 31, 2025, the newest annual filing the city has published, and 1 of them stood vacant that day. A year earlier, none of 4 did.
- Storefronts registered for December 31, 2025
- 4
- Vacant that day
- 1
- Share vacant across Union Square
- 11.7%
- Share vacant along Fifth Avenue
- 14.0%
- Share vacant citywide
- 9.2%
- Condominium tax lots that filed
- 1
Vacant on December 31, by year
Own or lease out a storefront at 100 Fifth Avenue? Listing it is free, and it is matched against every active requirement for retail space in Union Square the day it goes up.
Source: NYC Department of Finance, Storefronts Reported Vacant or Not (Local Law 157), annual filings for 2019 to 2025, pulled 2026-10-16. Owners of buildings with ground- or second-floor storefronts register each one every year with its status on December 31; counts are by tax lot, summed over the condominium's unit lot that filed, as the owners filed them. The 2025 filing was due June 1, 2026, so a storefront vacant then may have been leased since. A vacant storefront is not always on the market, and none here is listed on Leasemark unless it shows above.
NYC Department of Finance records
Owner, property tax and assessed value
The Stuyvesant Building is a condominium of 2 tax lots. 100 FIFTH OWNERS, LLC, one of 2 owners of record on the roll, owns the units that make up 87% of its market value. For tax year 2026/27 the city values the Stuyvesant Building at $128.7 million and assesses it at $57.9 million. After phase-ins and exemptions its taxable value is $53.6 million; at the Class 4 rate of 10.848% (tax year 2025/26, the latest rate the Department of Finance lists) that comes to about $5.81 million a year before abatements, roughly $23.19 per square foot of floor area. Commercial leases here often pass a tenant's share of tax increases over a base year through as additional rent.
- Largest unit owner
- 100 FIFTH OWNERS, LLC (87% of market value)
- Tax class
- Class 4 (commercial and industrial)
- City market value
- $128,678,000
- Land market value
- $15,000,000
- Assessed value
- $57,905,100
- Taxable value (phased in)
- $53,595,360
- Estimated yearly tax
- About $5.81 million
- Tax per SF of floor area
- About $23.19
- Condominium tax lots
- 2
- Owners of record
- 2
City market value by tax year
Manage or lease this building? Claim this page. Requests are reviewed by hand.
How to find who owns any NYC buildingSource: NYC Department of Finance, Property Valuation and Assessment Data (2026/27 roll, summed over 2 condominium tax lots; owner names as the roll records them, which cuts some long names short), pulled 2026-10-16; tax rate from the Department of Finance tax rates page, checked 2026-09-28. The estimate is the taxable value times the class rate. It leaves out abatements, payment-in-lieu-of-taxes agreements and charges, so the actual bill can differ.
Own or manage 100 Fifth Avenue? List a space here free and we match it against every active requirement. Renting it out yourself? Read the landlord's checklist.
SEC filings (EDGAR)
Companies with offices here
One investment manager gives 100 Fifth Avenue as its office address in SEC filings.
Investment manager
Source: U.S. Securities and Exchange Commission, EDGAR, Financial Statement Data Sets (2025 Q4 to 2026 Q3) and Form 13F Data Sets (through August 2026), pulled 2026-10-24; names as filed. The address is the one each company reports to the SEC. This is not a tenant roster: private companies and most smaller firms do not file with the SEC, a company can report a building it owns, and an address can trail a move by a quarter. Care-of addresses, blank check companies and asset-backed issuers are left out.
Have space to sublease at 100 Fifth Avenue? List it free and we match it against every active requirement.
NYC Department of Buildings permits
Work permits and build-outs
In the 12 months to October 2026, the Department of Buildings issued first permits for 9 jobs at the Stuyvesant Building. In the last two years, interior work was permitted on 6 floors (floors 1, 7, 9, 10, 17 and 20, the basement, the cellar, the lobby and the mezzanine). The newest build-out, on floor 7, was first permitted in February 2026 (construction, mechanical, plumbing, sprinklers; filed cost estimate $100,000).
- New jobs, last 12 months
- 9
- Initial permits, last 12 months
- 25
- Newest job first permitted
- July 2026
- Interior build-outs, last 24 months
- 8
- Floors with interior work, last 24 months
- 1, 7, 9, 10, 17 and 20, basement, cellar, lobby, mezzanine
- Facade and sidewalk jobs, last 24 months
- 1
Recent build-outs
New jobs by year
Build-outs across Union SquareWhere NYC offices are being built out
Source: NYC Department of Buildings, DOB NOW: Build Approved Permits, pulled 2026-10-24 (permits issued through 2026-10-22). A job counts once, when its first permit is issued; renewals are not new work. A build-out groups jobs on the same floors first permitted within 120 days of each other. Costs are the estimates filed with the jobs. Jobs filed before DOB NOW (in the older BIS system) are not counted. A permit is approval to do the work; it does not say who the work is for or whether it is finished.
Landmarks Preservation Commission records
Architecture and history
The Stuyvesant Building was designed by Albert S. Gottlieb (architect) Metropole Const. Co. (builder) and built in 1905-1907 in the Beaux-Arts style. It stands in the Ladies' Mile Historic District, so exterior changes and new signage go through the Landmarks Preservation Commission.
- Architect
- Albert S. Gottlieb (architect) Metropole Const. Co. (builder)
- Constructed
- 1905-1907
- Style
- Beaux-Arts
- Primary material
- Buff brick
- Built as
- Store, lofts and offices
Source: NYC Landmarks Preservation Commission, Individual Landmark and Historic District Building Database on NYC Open Data, pulled 2026-10-16. A designation can cover part of a lot, such as a facade or a lobby interior.
No office space listed in Union Square yet
Own or broker space at 100 Fifth Avenue? List it free: it shows on this page and is matched against every active requirement the day it goes up.
Before you sign
Plain-English guides to square footage, rent and lease terms in New York, and free calculators to run your own numbers.
How much is commercial rent in NYC? Per square foot, by borough
What NYC office, retail and industrial buildings collect per square foot in each borough, from the city's own filings, with the monthly math and the costs on top of rent.
Good guy guarantee in NYC commercial leases
How a good guy guarantee works in a NYC commercial lease: what it covers, how the guarantor gets released, what to negotiate and the 2025 surrender ruling.
How much office space do you need per employee in 2026
About 150 to 260 rentable SF per employee in NYC when everyone comes in, less with shared desks: tables by team size and layout, then how to size from your busiest day.
- Free calculator
Office space calculator
How many square feet your team needs, from headcount and layout to a rentable range.
- Free calculator
Commercial rent calculator
Turn a price per square foot into monthly and yearly rent, with increases, free rent and net effective rent.
- Free calculator
TI allowance calculator
A landlord's build-out allowance in dollars, what it covers of your budget and what the rest adds to the rent.
- Free calculator
Commercial Rent Tax calculator
Whether a Manhattan lease owes the city's Commercial Rent Tax, and roughly how much a year.
Questions about Stuyvesant Building
How big is the Stuyvesant Building?
The Stuyvesant Building has about 251,000 square feet of floor area in total, including 224,000 square feet of office and 17,000 square feet of retail, according to NYC PLUTO 26v2. These are the city's estimates for the whole building, not space that is available.
When was the Stuyvesant Building built?
The Landmarks Preservation Commission's building records date the Stuyvesant Building to 1905-1907, designed by Albert S. Gottlieb (architect) Metropole Const. Co. (builder). City tax records list 1906 as the year built. The building is 19 floors tall.
Who designed the Stuyvesant Building?
Albert S. Gottlieb (architect) Metropole Const. Co. (builder), according to the Landmarks Preservation Commission's building records, which list the style as Beaux-Arts and its original use as store, lofts and offices.
What is the address of the Stuyvesant Building?
The Stuyvesant Building is at 100 Fifth Avenue in Union Square, Manhattan. City records list 98-104 Fifth Avenue and 1-3 West 15th Street on the same tax lot (BBL 1008177502). A space listed on Leasemark at any of these addresses shows up on this page.
What is the ZIP code of 100 Fifth Avenue?
100 Fifth Avenue is in ZIP code 10011, according to the city's tax lot records (NYC PLUTO 26v2) and the Department of Finance's assessment roll. The Stuyvesant Building is at 100 Fifth Avenue, New York, NY 10011, in Union Square.
What is the zoning at the Stuyvesant Building?
The lot is in the C6-4M zoning district. PLUTO lists a built floor area ratio (FAR) of 15.58 and a maximum commercial FAR of 10 for this lot. It is inside the Ladies' Mile Historic District, so exterior changes go through the Landmarks Preservation Commission.
What subway station is closest to the Stuyvesant Building?
The closest subway station to the Stuyvesant Building is 14 St-Union Sq (the 4, 5, 6, L, N, Q, R and W trains), about 900 feet away in a straight line, roughly 3 minutes on foot. The MTA lists it as an accessible station. Also nearby: 14 St (the 1, 2, 3, F, M and L trains, connected to 6 Av), 3 min walk; 23 St (the R and W trains), 7 min walk. Walking times are straight-line estimates; the street route is longer.
Who owns the Stuyvesant Building?
The Stuyvesant Building is a condominium of 2 tax lots. 100 FIFTH OWNERS, LLC, one of 2 owners of record on the roll, owns the units that make up 87% of its market value. That is from the NYC Department of Finance's 2026/27 assessment roll (BBL 1008177502). Deeds and mortgages for each unit are public in ACRIS, the city's property records system.
Who are the tenants at the Stuyvesant Building?
Leasemark does not have the building's tenant roster, but SEC filings name companies with offices at the Stuyvesant Building. One investment manager files 13F holdings reports from the address: WATER ISLAND CAPITAL LLC. Private companies do not file with the SEC, so the full list of tenants is longer, and a company can also report a building it owns.
Is there construction at the Stuyvesant Building?
In the 12 months to October 2026, the Department of Buildings issued first permits for 9 jobs at the Stuyvesant Building. In the last two years, interior work was permitted on 6 floors (floors 1, 7, 9, 10, 17 and 20, the basement, the cellar, the lobby and the mezzanine). The newest build-out, on floor 7, was first permitted in February 2026 (construction, mechanical, plumbing, sprinklers; filed cost estimate $100,000). These are the Department of Buildings' DOB NOW work permits for tax lot 1008177502. A permit is approval to do the work; it does not say who the work is for or whether it is finished.
What are the property taxes at the Stuyvesant Building?
The Department of Finance's 2026/27 assessment roll lists a taxable value of $53.6 million for the Stuyvesant Building (the sum of its 2 condominium tax lots). At the Class 4 rate of 10.848% (tax year 2025/26, the latest rate the Department of Finance lists), that is about $5.81 million a year, roughly $23.19 per square foot of floor area, before abatements such as ICAP. The city's property tax records for BBL 1008177502 show the actual bill.
What is the assessed value of the Stuyvesant Building?
For tax year 2026/27, the NYC Department of Finance puts the market value of the Stuyvesant Building at $128.7 million ($15 million of it land) and its assessed value at $57.9 million, the 45% of market value the city assesses for Class 4 property. The city's market value rose 25% from 2022/23 ($103.3 million) to 2026/27.
Are there vacant storefronts at the Stuyvesant Building?
Owners registered 4 storefronts at the Stuyvesant Building for December 31, 2025, the newest annual filing the city has published, and 1 of them stood vacant that day. A year earlier, none of 4 did. These are the owners' filings with the Department of Finance under Local Law 157, so a storefront vacant on December 31, 2025 may have been leased since. Owners and brokers can list a storefront on Leasemark for free.
Is there office space for lease at the Stuyvesant Building?
No space at 100 Fifth Avenue is listed on Leasemark right now. Owners and brokers can list space here for free, and tenants can post a requirement to be matched when space opens up.
2,723 buildings from city records
Look up another building
Size, owner of record and property tax, plus the last sale and energy grade where the city has them, for every large office, retail and industrial building we track. Type any address on the lot (like 350 Fifth Avenue), a building name, a street or a neighborhood.
Union Square
Transit hubs in Union Square
- 4 5 6 L N Q R W at 14 St-Union Sq